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openSUSE 16.0 Security Advisory 2026-21084-1 Important Bypass and DoS

An update that solves 16 vulnerabilities and has 4 bug fixes can now be installed.. openSUSE security update: security update for distribution ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:21084-1 Rating: important References: * bsc#1265429 * bsc#1265788 * bsc#1266049 * bsc#1266629 Cross-References: * CVE-2026-33814 * CVE-2026-39821 * CVE-2026-39827 * CVE-2026-39828 * CVE-2026-39829 * CVE-2026-39830 * CVE-2026-39831 * CVE-2026-39832 * CVE-2026-39833 * CVE-2026-39834 * CVE-2026-39835 * CVE-2026-41888 * CVE-2026-42508 * CVE-2026-46595 * CVE-2026-46597 * CVE-2026-46598 CVSS scores: * CVE-2026-33814 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H * CVE-2026-39821 ( SUSE ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N * CVE-2026-39821 ( SUSE ): 9.1 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N * CVE-2026-39827 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H * CVE-2026-39827 ( SUSE ): 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N * CVE-2026-39828 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N * CVE-2026-39828 ( SUSE ): 8.6 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N * CVE-2026-39829 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H * CVE-2026-39829 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N * CVE-2026-39830 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H * CVE-2026-39830 ( SUSE ): 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N * CVE-2026-39831 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N * CVE-2026-39831 ( SUSE ): 8.6 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N * CVE-2026-39832 ( SUSE ): 8.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N * CVE-2026-39832 ( SUSE ): 6.2 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N * CVE-2026-39833 ( SUSE ): 7.7CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N * CVE-2026-39833 ( SUSE ): 8.5 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N * CVE-2026-39834 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H * CVE-2026-39834 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N * CVE-2026-39835 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H * CVE-2026-39835 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N * CVE-2026-41888 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L * CVE-2026-41888 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N * CVE-2026-42508 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N * CVE-2026-42508 ( SUSE ): 8.6 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N * CVE-2026-46595 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N * CVE-2026-46595 ( SUSE ): 8.6 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N * CVE-2026-46597 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H * CVE-2026-46597 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N * CVE-2026-46598 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H * CVE-2026-46598 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N Affected Products: openSUSE Leap 16.0 ------------------------------------------------------------- An update that solves 16 vulnerabilities and has 4 bug fixes can now be installed. Description: This update for distribution fixes the following issues - CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1265788). - CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266629). - CVE-2026-41888: tag deletion bypasses the storage.delete.enabled configuration (bsc#1265429). - CVE-2026-39827:Invoking memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh (bsc#1266049). - CVE-2026-39828: Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh (bsc#1266049). - CVE-2026-39829: Invoking pathological RSA/DSA parameters may cause DoS in golang.org/x/crypto/ssh (bsc#1266049). - CVE-2026-39830: Invoking client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh (bsc#1266049). - CVE-2026-39831: Invoking bypass of FIDO/U2F security keys physical interaction in golang.org/x/crypto/ssh (bsc#1266049). - CVE-2026-39832: Invoking agent constraints dropped when forwarding keys in golang.org/x/crypto/ssh/agent (bsc#1266049). - CVE-2026-39833: Invoking key constraints not enforced in golang.org/x/crypto/ssh/agent (bsc#1266049). - CVE-2026-39834: Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh (bsc#1266049). - CVE-2026-39835: Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh (bsc#1266049). - CVE-2026-42508: Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts (bsc#1266049). - CVE-2026-46595: Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x/crypto/ssh (bsc#1266049). - CVE-2026-46597: Invoking byte arithmetic causes underflow and panic in golang.org/x/crypto/ssh (bsc#1266049). - CVE-2026-46598: Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent (bsc#1266049). Changes: * Bounds-check the file basename in PurgeUploads Walk callback * Add S3 Express One Zone support to the S3 storage driver * Fix tag list endpoint in proxy mode * Clamp oversized `n` query parameter in proxy mode instead of returning 400 * See the full changelog below for the full list of changes. * internal/client/auth/challenge: cleanups and minor refactor * build(deps): bump go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp from 0.18.0 to 0.19.0 in the go_modules group across 1 directory *build(deps): bump go.opentelemetry.io/otel/exporters/otlp/otl ptrace/otlptracehttp from 1.42.0 to 1.43.0 in the go_modules group across 1 directory * build(deps): bump github/codeql-action from 4.34.1 to 4.35.1 * chore(build): Bump go version to latest * refactor: use slices.Backward to simplify the code * fix(proxy): fix tag list endpoint in proxy mode * Update docker-compose structure in deploying.md * build(deps): bump actions/upload-artifact from 7.0.0 to 7.0.1 * build(deps): bump actions/upload-pages-artifact from 4.0.0 to 5.0.0 * build(deps): bump docker/login-action from 4.0.0 to 4.1.0 * build(deps): bump docker/bake-action from 7.0.0 to 7.1.0 * fix(proxy): clamp oversized n query param instead of * feat(s3): add express zone one support to S3 driver * fix(storage): bounds-check the file basename in PurgeUploads Walk callback * chore(release): prepare for v3.1.1 release Patch instructions: To install this openSUSE security update use the suse recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - openSUSE Leap 16.0 zypper in -t patch openSUSE-Leap-16.0-949=1 Package List: - openSUSE Leap 16.0: distribution-registry-3.1.1-160000.1.1 References: * https://www.suse.com/security/cve/CVE-2026-33814.html * https://www.suse.com/security/cve/CVE-2026-39821.html * https://www.suse.com/security/cve/CVE-2026-39827.html * https://www.suse.com/security/cve/CVE-2026-39828.html * https://www.suse.com/security/cve/CVE-2026-39829.html * https://www.suse.com/security/cve/CVE-2026-39830.html * https://www.suse.com/security/cve/CVE-2026-39831.html * https://www.suse.com/security/cve/CVE-2026-39832.html * https://www.suse.com/security/cve/CVE-2026-39833.html * https://www.suse.com/security/cve/CVE-2026-39834.html * https://www.suse.com/security/cve/CVE-2026-39835.html * https://www.suse.com/security/cve/CVE-2026-41888.html *https://www.suse.com/security/cve/CVE-2026-42508.html * https://www.suse.com/security/cve/CVE-2026-46595.html * https://www.suse.com/security/cve/CVE-2026-46597.html * https://www.suse.com/security/cve/CVE-2026-46598.html . This update resolves 16 vulnerabilities and includes 4 bug fixes for openSUSE addressing significant security concerns.. opensuse security update, system vulnerabilities, bug fixes. . Severity: Important. LinuxSecurity.com Team

Jun 30, 2026 •Important OpenSUSE